Electrical problem about 12 37 350 * 90 339 251

[whity]

<div align="left">hi..I am Erdem from Turkiye. I have 1996 calibra turbo and it has a little electrical problem. The check control unit (12 37 350 * 90 339 251 ) stand and operete 5/6 mounths than it fails(the lamps on speedo are not turning on).When i change the control unit it starts working properly.I burned and changed 5 check control unit and i must find why it is burning.Do you think this is a kind of chronicle problem ? thanks for your replys
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